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Finding the Fourth Proportional to 286,710.66, 395,626.14 and 157,627.80

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Solution

The fourth proportional to 286,710.66, 395,626.14 and 157,627.80 is: 217,507.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,710.66 : 395,626.14 = 157,627.80 : x
  2. Step 2: Convert to fraction form
    286,710.66/395,626.14 = 157,627.80/x
  3. Step 3: Cross multiply
    286,710.66x = 395,626.14 × 157,627.80
  4. Step 4: Simplify right side
    286,710.66x = 62,361,678,070.69
  5. Step 5: Solve for x
    x = 62,361,678,070.69/286,710.66
  6. Step 6: Final answer
    x = 217,507.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.